Is my crush scared or waiting for the right time?

two weeks ago I told my crush that I liked him through email. and he hasn't replied yet. he show all the signs that he liked me and he is even my friend on Facebook. I don't talk to him becasue I don't know what to say. what I want to know is should wait for him? I want guys to reply because I want to know how they would react.
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Also, I recently found out e has a girlfriend in a long distance relationship. and he is white and I am black. he was my weight training teacher, who from my angle flirted with me all the time.
Is my crush scared or waiting for the right time?
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